# An electron an a positron are released from (0, 0, 0) and (0, 0, 1.5R) respectively, in a uniform magnetic field ….

Q: An electron an a positron are released from (0, 0, 0) and (0, 0, 1.5R) respectively, in a uniform magnetic field $B = B_o \hat{i}$ each with an equal momentum of magnitude p = eBR. Under what conditions on the direction of momentum will be orbits be non – intersecting circles?